Displaying 20 results from an estimated 24 matches for "flush_tlb_multi".
2019 Jun 13
4
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 Jun 13
4
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 Jul 19
0
[PATCH v3 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. Introduce
paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen
and hyper-v are only compile-tested).
While the updated smp infrastructure is capable of running a function on
a single local core, it is not optimized for this case. The multiple
function calls and t...
2019 Jul 02
0
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. Introduce
paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen
and hyper-v are only compile-tested).
While the updated smp infrastructure is capable of running a function on
a single local core, it is not optimized for this case. The multiple
function calls and t...
2019 May 25
3
[RFC PATCH 5/6] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 May 25
3
[RFC PATCH 5/6] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 May 31
2
[RFC PATCH v2 04/12] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 May 31
2
[RFC PATCH v2 04/12] x86/mm/tlb: Flush remote and local TLBs concurrently
To improve TLB shootdown performance, flush the remote and local TLBs
concurrently. Introduce flush_tlb_multi() that does so. The current
flush_tlb_others() interface is kept, since paravirtual interfaces need
to be adapted first before it can be removed. This is left for future
work. In such PV environments, TLB flushes are not performed, at this
time, concurrently.
Add a static key to tell whether this...
2019 Jul 02
2
[PATCH v2 0/9] x86: Concurrent TLB flushes
...required
restructuring of the series.
v1 -> v2:
* Removing the patches that Thomas took [tglx]
* Adding hyper-v, Xen compile-tested implementations [Dave]
* Removing UV [Andy]
* Adding lazy optimization, removing inline keyword [Dave]
* Restructuring patch-set
RFCv2 -> v1:
* Fix comment on flush_tlb_multi [Juergen]
* Removing async invalidation optimizations [Andy]
* Adding KVM support [Paolo]
Cc: Andy Lutomirski <luto at kernel.org>
Cc: Borislav Petkov <bp at alien8.de>
Cc: Boris Ostrovsky <boris.ostrovsky at oracle.com>
Cc: Dave Hansen <dave.hansen at linux.intel.com>
Cc:...
2019 Jul 19
5
[PATCH v3 0/9] x86: Concurrent TLB flushes
...[Andrew]
* Fix redundant TLB flushes.
v1 -> v2:
* Removing the patches that Thomas took [tglx]
* Adding hyper-v, Xen compile-tested implementations [Dave]
* Removing UV [Andy]
* Adding lazy optimization, removing inline keyword [Dave]
* Restructuring patch-set
RFCv2 -> v1:
* Fix comment on flush_tlb_multi [Juergen]
* Removing async invalidation optimizations [Andy]
* Adding KVM support [Paolo]
Cc: Andy Lutomirski <luto at kernel.org>
Cc: Borislav Petkov <bp at alien8.de>
Cc: Boris Ostrovsky <boris.ostrovsky at oracle.com>
Cc: Dave Hansen <dave.hansen at linux.intel.com>
Cc:...
2019 Jun 25
0
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
On 6/12/19 11:48 PM, Nadav Amit wrote:
> To improve TLB shootdown performance, flush the remote and local TLBs
> concurrently. Introduce flush_tlb_multi() that does so. The current
> flush_tlb_others() interface is kept, since paravirtual interfaces need
> to be adapted first before it can be removed. This is left for future
> work. In such PV environments, TLB flushes are not performed, at this
> time, concurrently.
>
> Add a st...
2019 Jun 26
2
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
> On Jun 25, 2019, at 2:29 PM, Dave Hansen <dave.hansen at intel.com> wrote:
>
> On 6/12/19 11:48 PM, Nadav Amit wrote:
>> To improve TLB shootdown performance, flush the remote and local TLBs
>> concurrently. Introduce flush_tlb_multi() that does so. The current
>> flush_tlb_others() interface is kept, since paravirtual interfaces need
>> to be adapted first before it can be removed. This is left for future
>> work. In such PV environments, TLB flushes are not performed, at this
>> time, concurrently.
>...
2019 Jun 26
2
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
> On Jun 25, 2019, at 2:29 PM, Dave Hansen <dave.hansen at intel.com> wrote:
>
> On 6/12/19 11:48 PM, Nadav Amit wrote:
>> To improve TLB shootdown performance, flush the remote and local TLBs
>> concurrently. Introduce flush_tlb_multi() that does so. The current
>> flush_tlb_others() interface is kept, since paravirtual interfaces need
>> to be adapted first before it can be removed. This is left for future
>> work. In such PV environments, TLB flushes are not performed, at this
>> time, concurrently.
>...
2019 Jun 26
1
[PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
> On Jun 25, 2019, at 8:36 PM, Andy Lutomirski <luto at kernel.org> wrote:
>
> On Wed, Jun 12, 2019 at 11:49 PM Nadav Amit <namit at vmware.com> wrote:
>> To improve TLB shootdown performance, flush the remote and local TLBs
>> concurrently. Introduce flush_tlb_multi() that does so. The current
>> flush_tlb_others() interface is kept, since paravirtual interfaces need
>> to be adapted first before it can be removed. This is left for future
>> work. In such PV environments, TLB flushes are not performed, at this
>> time, concurrently.
>...
2019 May 27
3
[RFC PATCH 5/6] x86/mm/tlb: Flush remote and local TLBs concurrently
...m/paravirt_types.h
> > +++ b/arch/x86/include/asm/paravirt_types.h
> > @@ -211,6 +211,12 @@ struct pv_mmu_ops {
> > void (*flush_tlb_user)(void);
> > void (*flush_tlb_kernel)(void);
> > void (*flush_tlb_one_user)(unsigned long addr);
> > + /*
> > + * flush_tlb_multi() is the preferred interface. When it is used,
> > + * flush_tlb_others() should return false.
>
> This comment does not make sense. flush_tlb_others() return type is
> void.
I suspect that is an artifact from before the static_key; an attempt to
make the pv interface less awkward...
2019 May 27
3
[RFC PATCH 5/6] x86/mm/tlb: Flush remote and local TLBs concurrently
...m/paravirt_types.h
> > +++ b/arch/x86/include/asm/paravirt_types.h
> > @@ -211,6 +211,12 @@ struct pv_mmu_ops {
> > void (*flush_tlb_user)(void);
> > void (*flush_tlb_kernel)(void);
> > void (*flush_tlb_one_user)(unsigned long addr);
> > + /*
> > + * flush_tlb_multi() is the preferred interface. When it is used,
> > + * flush_tlb_others() should return false.
>
> This comment does not make sense. flush_tlb_others() return type is
> void.
I suspect that is an artifact from before the static_key; an attempt to
make the pv interface less awkward...
2019 May 25
0
[RFC PATCH 5/6] x86/mm/tlb: Flush remote and local TLBs concurrently
On 25/05/2019 10:22, Nadav Amit wrote:
> To improve TLB shootdown performance, flush the remote and local TLBs
> concurrently. Introduce flush_tlb_multi() that does so. The current
> flush_tlb_others() interface is kept, since paravirtual interfaces need
> to be adapted first before it can be removed. This is left for future
> work. In such PV environments, TLB flushes are not performed, at this
> time, concurrently.
>
> Add a st...
2019 May 31
0
[RFC PATCH v2 04/12] x86/mm/tlb: Flush remote and local TLBs concurrently
On 31/05/2019 08:36, Nadav Amit wrote:
> To improve TLB shootdown performance, flush the remote and local TLBs
> concurrently. Introduce flush_tlb_multi() that does so. The current
> flush_tlb_others() interface is kept, since paravirtual interfaces need
> to be adapted first before it can be removed. This is left for future
> work. In such PV environments, TLB flushes are not performed, at this
> time, concurrently.
>
> Add a st...
2019 Jul 03
2
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
On 03.07.19 01:51, Nadav Amit wrote:
> To improve TLB shootdown performance, flush the remote and local TLBs
> concurrently. Introduce flush_tlb_multi() that does so. Introduce
> paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen
> and hyper-v are only compile-tested).
>
> While the updated smp infrastructure is capable of running a function on
> a single local core, it is not optimized for this case. The mult...
2019 Jul 03
2
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
On 03.07.19 01:51, Nadav Amit wrote:
> To improve TLB shootdown performance, flush the remote and local TLBs
> concurrently. Introduce flush_tlb_multi() that does so. Introduce
> paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen
> and hyper-v are only compile-tested).
>
> While the updated smp infrastructure is capable of running a function on
> a single local core, it is not optimized for this case. The mult...